Can Effexor trigger or worsen seizures?

I started on venlafaxine a couple of months ago, 150mg in the morning and 75mg at night, they didn't seem to be doing anything so I spoke to my psychiatrist who upped the night time dose to 150mg then after 2 weeks, 225mg in the morning and 150mg at night. Everything seemed to be going well, my mood improved, I had more energy and enthusiasm but wasn't sleeping as well as I had been before. Yesterday while I was on a quick visit to my work (I'm a registered nurse with almost 6 years experience) I had a massive seizure. Well, when I say "a seizure" now that I have spoken to the very lovely lady who ran over to help me, apparently I went up onto my tiptoes, stiff as a board and fell back, landing on my head. When I came round from the first seizure I tried to get up, I was determined I was going for lunch, only to go straight into a succession of seizures which were all really bad. I have no history of seizures, nor does my family. The only thing it can be is the fact the dose was increased to the max and it just wasn't suitable for me. I dread to think what would have happened if the seizures had been 5 minutes later because I would have been driving.

I don’t even have a history of seizures, but I started having them once I started Effexor. I know this is an old post. I just wanted to add to it, incase anyone happens to be searching for the same answers I’ve been. 

Hi Miranda, I've been taking Effexor ER for somwhere over a year. It does a great job helping with my depression issues. Last autumn I began having moments like someone flicked MY 'power switch' off and on. This happened frequently, no matter what I was doing. It lasted for months... Around April I my symptoms changed; they just did. Instead of the switch, is was like a 'woosh' going through my head. It would catch me off guard & the big ones catch my breath. After other testing drew up negative, I got in with neuro. My MRI was clear, but my EEG showed I was having seizures, even while asleep. No convulsions, greatfully. My doc put me on Tegretol for about a month before deciding to ween me from Effexor-after noticing a possible side effect was seizures. I'm almost done weening, but am still seizing. We are HOPING it's the Effexor causing them & discontinuing use will make them stop. But, I'm afraid once a med starts them, can just quitting make them stop?